There isn't a thread on the lights, I pieced it together myself. The hella glass housings I got were part number 002395031, you can find them on ebay. The bulbs I used are Hella 24v 100/90W h4's part number H83140041. I got them from amazon for less than $10 each. If you search on Ebay for "h4 headlight sockets" you should get a lot of results, I went with ceramic sockets so they can take the heat better, they were less than $1 each from china. Lastly if you don't have any military type packard connectors you are going to need those to plug into the headlight housings on the hood. Those can also be found on ebay but I found eriks military supply to be cheaper, part number MS27142-2 for a pack of 10 of the female 14 gauge connectors. One pack should be enough, each headlight only needs 3 connectors. You can either crimp or solder the metal parts onto the end of the wires, I solder because I dont have the correct crimping tool and it was just easier for me. I'll have to look at the wiring diagram but I believe wire 17 is high-beam, 18 low-beam, and 91 ground. They should be marked in the headlight housing. Heres a picture of the wiring for a h4 bulb.
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